Transistor

Transistor

*Were smaller,faster ,cheaper, required less power , and produce

less heat than vacuum tubes .

*In computers , atransistor function as an electronic switch

or bridge.

By, Rovilyn Papas

IV-Aquino

Thank`X...

THE TELEGRAPH

I learned that Samuel F.J. Morse concieve of his version of an ELECTROMANETIC TELEGRAPH in 1832 and constructed an experiment version 1815. He did not construc a truly practical system until 1844,when he built UNE from baltimore to washington.